Suddenly pc restarted.

First of all disconnect all peropheral connected to your motherboard. Take out Your RAM and clean it with soft clothe. Reinsert ram and restart your PC. If you can get display at this point then shut down your PC connect all peripheral back and restart your PC.

If not you will need to replace your ram.

Simple test - leave only the 512 stick and go into the BIOS and see if the memory is correctly recognized. If it isn't then it's defective. If it is then download, burn and boot from
http://www.pclinuxos.com/
and run the memtest to be sure. If the memory is ok then you will have to reinstall Windows - it doesn't like the new memory.

Remove CMOS and hard drive connection from motherboard. And then restart the system. It will give msg insert boot drive..

Now reinsert the CMOS and Hard drive connection to motherboard

Hello
You answered your problem my friend
Its a ram problem,try to take out the corrupted ram ( slot1) and start your computer.
Generally this Stop message indicates that a kernel-mode process or driver attempted to access a memory address to which it did not have permission to access. The most common cause of this error is an incorrect or corrupted pointer that references an incorrect location in memory. . When it occurs in kernel mode, it generates a STOP 0x0000000A message. If you encounter this error while upgrading to a newer version of Windows, it might be caused by a device driver, a system service, a virus scanner, or a backup tool that is incompatible with the new version.

Nowadays, motherboards supports only a selected number of RAMs. You have to read the manual and select from the given models. I am not talking about DDR2 or 667MHz. The manual will state the manufacturer (ex. Kingston) model no (KVR667XXXXXX) etc. Only those stated in the manual will work correctly with your motherboard.

Can you hear an audio cd playing
May be a video/graphics or monitor problem
if you can hear fans and hdd running

first you check that your ram version.... i means it is compatible with your motherboard...if still prob remains then remove your all ram insert 128 mb ram then restart the system....... upgrade ram should fallow frequency of 512 mb RAM are same as 128 mb ram freqency........if mismatch is occured then it did nt wrked correctly...

The first place i would look -- check the new memory, make sure its the correct type and voltage for your motherboard. Next, check to make sure your ram are both the same speed, voltage , etc. some motherboards are picky about memory types and some require that paired memory be installed.
Reseat (remove and replace) the memory in it's slot, poorly seated memory can cause restarts or no-starts. try these and post again here if you need further assistance.
Regards

u just open the system in safe mode one time and scan syatem through an antiviruse.........if it helps then it ok and if not then u have to format ur pc

Hi,

Try to run a system repair.