Windows 7 startup endless loop after W7 update & system restore

[spyslayer]

Hi,

I have a Dell XPS 8500, OEM Windows 7 64-bit installed, nvidia geforce GT640.
I did a Windows update last week but i stop halfway due to thunderstorm, i did a system restore and then continue Windows update the next day.

now my PC restart automatically after a few hours, so I did another system restore but this time the system restore was not successful, and now my PC is stuck in endless restarting cycle.

Can someone assist me? thank you in advance!

 

[paul1149]

Try other Advanced Boot Menu options, such as Last Known Good configuration or Safe Mode.

 

[AddRAM]

Is windows activated ?

Yes, it matters

 

[spyslayer]

i tried safe mode but it also restarts after a few minutes.

 

[ThrashZone]

Hi,
That's messed up
I would suggest using one of these recovery processes to at least get your personal files,
http://www.sevenforums.com/tutorials/287439-emergency-kit-save-your-files-dead-os.html

http://www.sevenforums.com/software/198909-lucid-puppy-way-recover-files-non-bootable-computer.html

After that I would do a clean all or clean and clean install windows
http://www.sevenforums.com/tutorials/52129-disk-clean-clean-all-diskpart-command.html

http://www.sevenforums.com/tutorials/1649-clean-install-windows-7-a.html

 

[spyslayer]

I bought a new HD and tried to install windows 7 but halfway through installation my PC restarts again.. what could be the issue? graphics card or motherboard or PSU?