If you want to know if it is a hardware problem.
Have someone burn you a KNoppix live CD- english not german release- and verify the MD5 sum. They can test it by rebooting the computer while it is in the drive.
Standard set up parameters: At first prompt type "knoppix screen=1280x1024 depth=24" and enter.
Let it boot.
After audio signaling of "Initiating startup sequence," go to the K in the bottom left corner.
Go to control panel
set repeat to 15/sec
Hit NUm Lock to enable it.
Iceweasel is firefox. Green blob on task bar.
Let it open. SEt your preferences by clicking edit and opening there.
Type any url in the bar and hit enter.
If this works, then it is your OS.
If it doesn't, it is your hardware.
This is a serious (and maybe complicated) problem I have and might be a bit cheeky posting it but I would like to find a check list of things I can do to get back up and running. Basically I had a PC made at Eclipse around August 2006 and it quite often used to freeze so I had to turn it off from the front switch (it had no switch on the back). It seemed machanically a bit dodgy and also took about 10 mins before you could turn it on again. It started getting worse and eventually it would turn off again as soon as it booted and finally would not start at all. I thought it was the power supply but there is some power as I get a green light on the front but no red light indicating disk action. The hard disk works as I have tested it. Does this leave the motherboard or OS ? I have no access to the dvd drives and the machine does not boot at all. My last PC from the supplier was fine but this one seems inferior and I can't work out the problem. As it is well over a year now I don't want to try and return it and am also thinking I may have made the problem worse myself. Is there any series of actions I can take to check and get the thing up and running ? Spec is:-
Asrock 775 Dual-Vista LGA775, PCI-E/AGP8x, DDR2, 7.15nd, ATX
Intel Core 2 Duo E6300 1.86GHz LGA775
1024Mb Dual Channel DDR2 667 Mhz memory
256Mb GeForce 7600GS VGA card
200Gb Maxtor Diamond S-ATA I/II 300 HD