[dEaF TO LiGhT]

Hey everyone,

This problem started happening all of the sudden and is getting really annoying.

I built this computer a little over a year and a half ago. Recently the hard drives failed and I had to buy two new ones (I configure them RAID 0). Needless to say, I'm running off a recently fresh install of Windows, have healthy hard drives, and I keep my computer clean. I leave it on all the time, and recently if I left it alone for an extended period of time (went to sleep, went to work, or went out at night for a couple of hours), the computer would stay on but would not respond. The monitor's orange sleep light would be on and I couldn't use a keystroke or move the mouse to get back. The only option is to press the hard reset button. I'm at work right now, and I'm sure when I get home it will be crashed again.

Specs:
Microsoft Windows Vista 64-bit
ASUS P5K-E WiFi AP
Intel E6850
Nvidia GeForce 9800GX2
4 GB DDR2 RAM

[IsolatedSnail]

It sounds like a power supply or motherboard issue. When power supply's go out on Dell's and HP's the motherboard will actually flash the power light a different color to alert you but won't respond with out a hard reset. If you have a motherboard issue the entire PC could just completely freeze. Does your motherboard have any type of diagnostics available to run tests with?

[dEaF TO LiGhT]

I'll have to check some diagnostics. It's been freezing after a couple of hours or maybe even less now, so it's really hard to figure out what is going on. I haven't seen the light change color though.

[joeten]

Hi if it is indeed crashing you would have info in the eventviewer,you can use this to get a idea of your temps http://www.almico.com/sfdownload.phpand this to get some info then check in your bios to see the info it shows http://www.cpuid.com/cpuz.php
this for checking you graphics and psu 32bit system only http://www.ocbase.com/perestroika_en/index.php?Download
also look in the task manager for who is hogging the system most it may give a clue

[dEaF TO LiGhT]

I wanted to bump this and add that I think the computer is somehow still functioning. I had a video playing and I continued to hear the audio after the crash. Also, it can still stream media to my Xbox 360.

[Rollin' Rog]

The "no signal" message will appear at the end of a cold shutdown or if there is a problem with the cabling to the Monitor or an issue with the Display card.

Usually such shutdowns are motherboard initiated, often due to critical overheating.

If the problem only occurs when the system is idle -- check to see that all Power Options are set to "never" including the one to turn off the disks.

If you are never seeing a BSOD with these -- then it is likely a freeze or shutdown caused by excessive heat.

Have you tried monitoring temps?

Look for a temperature rise of 30 - 35c from a completely cold boot -- if you see such -- then you should be concerned about that.

You can also check the drive temps with SpeedFan and do an online S.M.A.R.T. analysis

http://www.majorgeeks.com/download337.html


If the problem began recently, and you think it might be software -- just try a System Restore to a date when they were not happening -- these can be undone if not helpful.