HI,
you go to system restorepoint and find the date that your computer shutdown normally

cheer,

Travid

Hi there my new computer i built last thursday does the exsact same thing its in at the shop

they tell me it may be the ram so maybe you could try that

try different ram or get the place you got it from if the ram still has a warranty to return it to the manufaturer

i hope this is what is wrong with my pc as i am having the same trouble as you

also try a different hard drive cable if u have a sata hard drive thats what my mate in auz told me

he said thats what you should do if you hear a click sound when you turn it on and then it resets

he said if thats the prob the computer will still beep just once to tell you everything is ok

mines really bad it doesnt even get to beep and no bios screen

mines in a pc store getting fixed only hope they prevail

Hi, I am having the same problem with my PC. Windows keeps rebooting before anything can be seen on the screen. I tried booting it even in the safe mode but still the same problem. I have linux installed on the same system and that is working fine..

Mine does the exact same thing, sometimes it stays blank with the blue lights and the fans on for ages, during the last week, its still not been working like its supposed to, but it does eventually turn on (if your lucky).
If you have the same HP laptop as me, what i do is, hold down the quickplay button and it works after the first on off, or I took the battery out at the back, then put it back in, and tried again, and that seemed to make a difference, I am still waiting for my laptop to turn on now, but all you have to do is keep trying!
I hope this helps,

I hawe same problem. my pc is new so it isnt dusty or else. but my do this is turn it on and then it show some tab but i cant read it beciuse it only shows up for few sec. and then pc rebooots.

Same problem here with an Ubuntu/Win7 dual boot system. The weird part is, if I turn the ATX power supply completely off (the switch on the back of the power supply), and turn it back on, the pc is able to boot into Win7 with no problems whatsoever. I repair with the original Win7 DVD reports no problems, so my only solution has been the switch. A single Win7 install on the same system (no dual boot, only Win7 in a clean HDD) shows no signs of the problem. The boot loader I am using is Grub2, but the same happened with Win7 Boot loader and with Grub, so I am confused. My guess is the ACPI is leaving something behind so when the power is completely cut off, the system is able to boot normally.