Windows 7 auto login and prevent user password from expiring

User profile service failed the logon User profile cannot be loaded
How to disable user password from expiring.

Windows 7 auto login :
To activate windows autologin directly from windows type in run : control userpasswords2
You will get this window :

Then select the user you want to autologin and deselect : Users must enter a user name and password to use this computer. , press Apply and you will be ask for the password. Type the password ( it can also be blank ) and OK.

Windows 7 user polices :
In windows home and home premium you do not have the Local Users and Groups (Local) available.
You can try to open it by typing : lusrmgr.msc

To disable the password expiration type at a command promt (cmd) :
wmic useraccount set passwordexpires=false

will set the passwordexpire attribute to all accounts to false.

If you also have autologin activated you will not be able to log in with no user.
To prevent this loop keep pressed the SHIFT key while booting windows or change bios time or reset bios by removing battery so the user password is not expired anymore.

AsusSetup pop-up error - C:\Users\Username\AppData\Local\Temp\ 132218 Log.iniis lost

At start-up on a limited user account, or if you clean the temp folder you get :

To fix-it you have to delete the schedule task : i-Setup105832
Open Task Scheduler - In Control Panel under Administrative Tools, or type Task Scheduler in Start menu.

Configure a software raid 1 mirroring in windows 7

You need to use a HDD as big or bigger then the one you want to mirror, one identical would be best.

Open Disk Management either by accessing Computer Management by Right click - on My Computer - and select Manage - then select under Storage - Disk Management
or type in Run - diskmgmt.msc

IF you want to make a mirror to your active windows hdd you MUST start first with the System Reserved partition (100MB NTFS) or convert the whole hdd to dynamic first.
(if you start mirroring from the second, third etc partition you will not be able to mirror the System Reserved partition unless you wipe the hole hdd and reinstall windows)

Right click System Reserved partition and select Mirror volume - select the empty disk press OK and then you will be asked if you want to convert the two HDD to dynamic disks.
Select OK.
Wait for each mirrored partition to sync or it will take many hours to sync them in parallel

This will only work with MBR formated HDD - and for booting/installing Windows you must select in BIOS - boot options Legacy Mode (not UEFI).
If you chose to install windows with GPT partitioning style it will create some system reserved partitions that are not visible in disk management so you will be unable to mirror them.

RAID 0 - stripping for performance
RAID 1 - MIRRORING
RAID 10 - https://www.youtube.com/watch?v=bcCfVYZa0k0

Windows sharing from limited user - access denied

Open Network and Sharing Center click Change advanced sharing settings

Public folder sharing - select - Turn on sharing so anyone with network access can read and write files in Public Folders
Password protected sharing - Turn off password protected sharing

After you access the shared computer with the printer you receive and Access denied message when you want to access the printer.
Go to Control Panel - User Accounts - Credential Manager - Add a Windows credentials

Printer not appearing in devices and printers

Devices and Printers icon of the printer is missing but you can find the printer when you print from applications.

Go to services and find :

• Device Association Service
• Device Install Service
• Device Setup Manager

Start them all and if you have more device ... something services start them all, and if any is on disabled put it on manual - they should appear as Manual (Trigger Start) - and restart the computer, then the printer should appear.

NTLDR is missing

You have to enter Windows Recovery Console :

Insert Windows Xp cd and select to boot from CD.
At Welcome to Setup press R for repair.

Select the number for your windows instalation ( most often 1 ).
Enter Administrator password. Then type :

copy x:\i386\ntldr c:\
copy x:\i386\ntdetect.com c:\

bootcfg /rebuild - to generate a new boot.ini file

Enter Load Identifier: Windows XP

Enter OS Load options: /Fastdetect  

After you boot in windows check that all 3 files are sistem, readonly and hidden so they don't get deleted again.
Open cmd, go to C:\ type attrib
To add all attributes type :
attrib +S +H +R C:\boot.ini
attrib +S +H +R C:\NTLDR
attrib +S +H +R C:\NTDETECT.COM 

If you want to manually edit boot.ini first must remove attributes :
attrib -S -H -R C:\boot.ini
then add them back :
attrib +S +H +R C:\boot.ini

Open File Security Warning Prompt at Start-up

Intel chipset :
C:\Windows\system32\igfxtray.exe etc

The problem is caused by downloading an exe file with IE that adds a Zone Identifier.


To check that it's a zone.identifier caused by downloading the file with IE type :

dir /r C:\WINDOWS\system32\igfxtray.exe

where /r :
  /R          Display alternate data streams of the file. 
and you should see something like ZoneIdentier NTFS data stream

To remove the zone right click the file select properties and select Unlock.

Streams utility can scan and remove the Zone.Identifier 

You can either scan all the Windows folder or the C: drive with the command :

Streams.exe /s C:\Windows 

Remove the zone with :

Streams /d C:\WINDOWS\system32\igfxtray.exe

NSIS Error - Error launching installer

Another error message related to same problem : System cannot find the path specified

Rename the folder or move the installer to a folder that has a name without special characters.
Browser default Download folder might be : "Descărcări" etc depending on your windows language.

Install PHP in windows to run from cmd

Download the latest version of PHP for windows from here : http://windows.php.net/download/

Unzip and move folder to C: or where you want and then add the path to the system path.
Copy the php.ini-production into php.ini in the same folder.

Add php location to system path so you can run it from CMD.
Right click on My Computer and select Properties then follow instruction in the image below.

how to add php exe to system path

You need to install if you don't already have it  Visual C++ Redistributable for Visual Studio 2012 otherwise you will receive the error :
The Program can't start because MSVCR110.dll is missing from your computer. Try reinstalling the program to fix this problem.

http://www.microsoft.com/en-us/download/details.aspx?id=30679

Run php to see that it works.

SATA mode : AHCI vs IDE vs RAID

AHCI  - is the native sata mode.
- supports hot plugging (add/remove component while the computer is running) and some faster indexing
To be able to take advantage of the sata hot-plug your motherboard or sata controller must also be sata hotplug capable ( not all are ).
If it is, and it is activated from BIOS you will see the Safely Remove Hardware icon on the system tray, and your hard drive will be listed there.

RAID - is AHCI mode plus vendor specific raid configurations

Although windows vista or later has AHCI support will not load the driver at start-up if the os was installed in IDE mode, but can be installed in windows after booting in IDE mode.

AHCI support exists in Windows Vista, 7 and 8.
Windows Xp only supports IDE mode natively at boot but you can add a sata/raid driver via the F6 boot option or after the os is installed.

Raid error when installing windows xp with F6 option

File iaStor.sys cause an unexpected error (4096) at line 2113 in d:\xpsprtm\base\boot\setup\oemdisk.c.


To solve the problem you must extract the archive directly on the floppy drive, not extract to default location and then copy/paste to floppy.
Prior to this I have changed windows cd-s, countless pieces of floppy disks and many hours.

If the motherboard manufacturer does not provide good archive or one that cannot  be extracted directly to floppy you can download from intel downloadcenter by searching the south bridge chipset that you can find on the motherboard manufacturer website.

Intel® ICH9R/ICH9M-E/ICH10R/PCH/PCHM SATA RAID controller  

https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=17882 

---------------------------------------------------------------------

Se extrage arhiva cu drivere RAID direct pe disketa si nu in locatia initiala si apoi sa copiezi fisierele pe disketa. Daca producatorul nu ofera o arhiva ce poate fi extrasa direct pe disketa se cauta dupa modelul chipsetului (south bridge) pe site la intel, nvidia etc dupa caz.

Windows diagnostics and utils

Total system uptime, windows instalation date :

WinAudit - http://winaudit.zymichost.com/index.html
or write in cmd systeminfo|find /i "install"
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Windows activation :  slui.exe
IF windows fail to activate check the system date to be current date, as the server verification will fail with an older date.
If all else fail you can use automated phone sistem : 0800 822 222 (Romania)
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Useful programs :

Nirsoft - password recovery - http://www.nirsoft.net/
Sysinternals - various windows diagnostics - http://technet.microsoft.com/en-US/sysinternals


Get Data Back FAT32 NTFS  4.32 - Recover deleted files  (you need paid version to recover)


Java download - http://java.com/en/download/manual.jsp


CD Burner XP - https://cdburnerxp.se/
Magic iso maker - http://www.magiciso.com/download.htm

Daemon tools lite - http://www.disk-tools.com/download/daemon


Unlocker - ( Cannot delete file: Access is denied ) - http://www.emptyloop.com/unlocker/
Easeus Partition Master free ( partition manager ) - http://www.partition-tool.com/personal.htm
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HDD diagnostics :

HDD - Western Digital Data LifeGuard Diagnostics - WinDlg

FTP mapping + VPN - Windows 7

FTP mapping - windows explorer

Open My Computer - Right Click - Select Add a network location - and follow the wizard, you have to provide the address  eg. ftp://ftp.domain.com/ , and select if you want to connect anonymous or with a specific username.

Setare VPN - Server - Client - Windows 7

VPN (Virtual Private Network) - allows direct access to a private network from the internet
Data transferred through a VPN is encrypted

1. VPN Server - incoming

Open - Network and Sharing - Change Adapter Settings
or Run - control ncpa.cpl

Create port forwarding on the router for PPTP on port 1723
 

Or press ALT key

Click File, and then New Incoming Connection.
Select the users you'd like to give access
Select Through the Internet 
Select TCP/IPv4

And follow wizard : select a username with password, Through the internet, TCP/IPV4 and File sharing if you want it

2. VPN client

Click the Start button. In the search bar, type VPN and then select Set up a virtual private network (VPN) connection.


OR

Run - %windir%\system32\xwizard.exe RunWizard {7071EC75-663B-4bc1-A1FA-B97F3B917C55}

VPN – Virtual Private Network

When you connect to a public hotspot - free internet - at a hotel, restaurant, pub, airport etc – your data will pass through that local network, and any other users connected to the same network can listen to your data, especially when it is unencrypted - when you can login without a password.

A vpn - is a virtual private network - but this connection is now encrypted with a Very long password (64 or 128 randome characters) that is almost imposible to break, or the effort is expensive unless you are targeted specifically.
In most cases hackers just scan the trafic for credit cards or passwords to account.

There are two ways to do this.

Method 1

This is the free mothod. If you own a router at your house with an internet connection, most router nowadays have a vpn server function implemented through openvpn.
You just have to enable it on your router and and download the configuration file to your mobile phone / laptop.

If you are using linux you have to install openvpn
sudo apt install openvpn
Then you have to start the tunnel as root
openvpn --config /home/user/OpenVPN-Config-MyRouter.ovpn

Method 2

Use a payed service like NordVPN – where you pay around 10 euro per month and have all your data encrypted.
With this service you also get a few more benefits like being able to change your location so you can access services available only in those countries.
If you are a involved with webservices you can also test if geolocation works well.

SSH tunnel

SSH tunnel - encrypted data - for public access points or avoiding local firewall rules

1. Custom firmware  Tomato or DD-WRT  on a router connected to the internet
2. SSH client eg. PuTTY
3. SOCKS compatible browser eg. Firefox
4. Dynamic DNS eg. NoIP

Create a file eg. tunelssh.bat with the following line (putty exe must be in same folder or in system_path) :

start /b putty -D 80 -P 22 -ssh xxx.no-ip.biz -l root

start /b - run in background
-D xxx - selected port for the tunnel ( 80 default for HTTP )
-P 22  - ssh listening port on the destination router (default 22)
xxx.no-ip.biz - public dns address or ip
-l root  - username for authenticating on ssh server (optional)

Atmega AVR Programming Basics

Program an AVR manually


DDRX = DATA DIRECTION REGISTER X [1=output/0=input] where X is the letter of the register
eg. DDRC |= _BV(7);    set pin 7 of register C as output

PORTX = 1;
eg.  PORTC ^= (1<<1);  set pin 1 of register C to HIGH (5v) until otherwise set

    DDRB = 0b00000110;
  PORTB = 0b00000100;

Set a bit :

_BV() is a macro, BV = bit value

#define _BV(bit)  (1 << (bit))

_BV(7) = (1<<7)   

a |= (1<<position) or
a |=_BV(position)

example :
a = 00000000
a |= (1<<3)  =>  a = a|(1<<3) => a=(0000000)|(00000100) => a=00000100
a |= _BV(3)

Set a bit :
a |= (1<<2);
a |= _BV(2);

Clear a bit :
a &= ~(1<<2);
a &= ~_BV(2);

uint8_t (same as: unsigned char)
int8_t (same as: signed char)

uint16_t (same as: unsigned int)
int16_t (same as: int)

Hello world program in microcontroller world = Blink program :

#define F_CPU 1000000UL  // set proc speed to 1MHz
#include <avr/io.h>
#include <util/delay.h>

int main (void)
{
    DDRD |= _BV(6);  // pin D6 set as output
   
    while(1)
    {
        PORTC |=_BV(6);
        _delay_ms(1000);
       PORTC &= ~_BV(6);
      _delay_ms(1000);
    }
}

----
itoa() - convert integer to string.

Software :

For uploading hex data to avr :
eXtreme Burner - AVR => GUI alternative to avrdude - for uploading hex data to AVR
http://extremeelectronics.co.in/


For compiling code to hex :
WinAVR - Gnu C compiler and AVRLibC -  http://sourceforge.net/projects/winavr/
AVR Studio - IDE  - aStudio4b589.exe

Resurse :
Using LCD module with AVR - http://extremeelectronics.co.in/avr-tutorials/using-lcd-module-with-avrs/
AVR basic programming - SPI PROGRAMMING BASICS
Interfacing ps/2 - http://codelake9.wordpress.com/2011/12/10/interfacing-ps2-keyboard-to-atmega128atmega64/

ADC - analog to digital convertor

   //InitADC
   ADMUX=(1<<REFS0); // For Aref=AVcc;
   ADCSRA=(1<<ADEN)|(7<<ADPS0);

uint16_t ReadADC(uint8_t ch)
{
   ch = ch & 0b00000111;
   // clear previous channel selection
   ADMUX &= 0xF8;
   ADMUX |= ch; // add in the new selection bits (REFS0 untouched)

   //Start Single conversion
   ADCSRA|=(1<<ADSC);

   //Wait for conversion to complete
   while((ADCSRA & (1<<ADSC)));

   return(ADC);
}

     //ReadADC( channel )
     //ADC Channel ch must be 0-7 or what you micro has
      adc_value=ReadADC(7);

Avr - SPI (Serial Peripheral Interface)

Using USBASP :

CONECTIONS : 
MISO, MOSI, SCK, SS

CODE :

#define F_CPU 4000000UL


char spiData = 0;
SPCR = (1<<SPE);                   // Enable SPI

while(!(SPSR & (1 << SPIF)));   // Wait for transmission end
spiData = SPDR;                      // Read SPI Data Register - 1 byte

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