PC with cracked windows 7, rebooting by itself

[Nacho-RT74]

my PC is rebooting ITSELF every couple of hours or so... where to search ? Its rebooting without anykind of menu on the middle of the process, just like you were turning on by the first time. Then starting any brownser, requeste me If I can get back the last session I had on brownsers

another sympthom... when goes to hibernation, is imposible try to get it back normally. reboots twice untill gets a menu telling me try to get it back normally ( which selecting, never gets back, and begin sometimes somekind of scan disck ) or rebooting normally. Menu options says kinda off what I tild you not really exactly that

It has, new HDD ( or supposelly new ), just the one with the OS. I have a secondary old one.
new mother board
new RAMS.

same old CPU what I have been using in last 3 years.
yesterday changed the power source thinking it could be that.

NOTE... on last weeks it was being allmost imposible try to boot it sometimes. Only made to boot it unplugging and plugging back the HDD and Optical units conectors ( data and power ). last time had even to switch the power plugs between units. Thats why I bough a new Power source, thinking the old one could be getting a wrong Power value on some of its pigtails.

I'm toward about some software deal. BUT I have reinstalled FROM 0 everything three times in a month.

[Tilar]

Sounds like a power supply about to take a crap. You should check the voltage. Ram can do the same thing and so could a bad driver.

[BananaDan]

Sounds like a power supply about to take a crap. You should check the voltage. Ram can do the same thing and so could a bad driver.

I agree.  Also, your subject says cracked Windows 7?  With the introduction of Windows Vista, Microsoft rolled out a new licensing system where all PCs phone home to verify they are running legitimately purchased licenses.  If you have a cracked key, they have the ability to black list those types of keys and will render your PC useless.  From what I have read though, it won't put your PC into endless reboot loops, it should drop you on a reduced functionality OS and you're presented with the option to legitimately license your OS, or call Microsoft if you own a legit license and that scenario occurs in error.  Without having my hands on your machine, I agree with Tilar that the issue is likely your Power Supply, a bad RAM DIMM, or it could also be a bad CPU.  There are voltage regulators built into motherboards that can go, but you said you replaced the motherboard so that shouldn't be the issue.

Dan

[Nacho-RT74]

my cousin installed same one without problems... This cracking is able to jump this.

bad driver... mmm, motherboard has its own divers CD what I installed ( althogh got some problems with the video driver when installing one of the tries ).

Power suply, Just changed it, new one, Is doing the same.

Rams issue... mmmm... well they are new, sealed blister, but who knows

[BananaDan]

See if you can download newer drivers for the motherboard from the manufacturer, also update it's BIOS to the latest version.  I never use CD-bundled drivers, always get the latest ones from the source.

Dan

[Nacho-RT74]

will try

( ASRock motherboard )

[Tilar]

I never use CD-bundled drivers, always get the latest ones from the source.

Dan