Windows 7 64bit rebooting instead of shutting down

Hi,

I have been having this issue where on windows 7 64bit every time I hit shutdown my laptop shuts down and then after 5 seconds it will restart again. I have reset laptop back to factory settings, I have downloaded latest bios update and installed and no luck at all. Any ideas?

Thanks in advance

If you're running the Factory Preinstall then that is a corrupt bloated-out install which no tech enthusiast would run in the first place. Get the superior Clean Reinstall - Factory OEM Windows 7,
but in addition make your Recovery disks first so you can wipe the HD using Diskpart Clean Command first since code in the boot sector can cause this.

Follow the steps in Reinstall tutorial closely pertaining to drivers which are automated in Win7. Watch closely to see if the problem persists throughout all stages of wipe and reinstall.

If you do all of this then you've elminated software as the cause.

This can also be a Power Supply issue so to start troubleshooting the hardware you can try another PSU to see.

Hmmm, just as a test I took out the charger chord from the computer and it shut down with out restarting. I then plugged laptop back in and when I shut down it reboots again so it must be to do with this? Any fixes or settings that need checking or changing at all? Thanks so far

What I'd do then is remove the power adapter and battery, press and hold the power button to release residual power. Now try it with the adapter only, and the battery only. Does it prove which one is causing the problem? If so you can replace it or cope with the problem, refine your result until you're ready to act.

Decent OEM AC power adapter and battery can be searched by PC model and bought on eBay very inexpensively. The cord may not be as heavy or part built as tough as the actual replacement part, however. I bought an AC adapter for a Compaq (crap) laptop for $9 which lasted a year before the PC died so it was worth the savings even if the cord was flimsy. For a better laptop that's newer it may be worth replacing with the manufacturer's replacement part.