Computer boots, no screen, yes i've searched :/

[thewalrus0034]

For at least 6 months i have expierenced the problem(s) of A: My monitor announces it is going into "digital power saving mode" and the status light turns amber or B: Upon startup the LCD status light remains amber and does not "awaken" so to speak. The monitor i am currently using is an L22QTW (LG flatron 22" LCD widescreen). Sometimes my computer works for a long period of perhaps a month and then enters this power saving mode without warning. I have tried another LCD monitor to no avail.



My system specs:

Mobo: Abit Fatal1ty fp-I90 SLI

GPU: Nvidia 8800 GTS 640mb

CPU: Intel Quad core extreme QX6700

PSU: Thermaltake 700W (i will try and find the model number for this

RAM: 2GB of Corsair XMS2 RAM (800MHZ) 2GB of Crucial Ballistix RAM (800MHZ)



Things I have tried:

1.) Different LCD monitor

2.) Different Graphics card (I REM'd the 8800 and got an identical one back)

3.) checked all connections both power and signal, in addition to unplugging and plugging back in to ensure it was connected

4.) Flashed the Bios

5.) Resetting the CMOS (this usually allows it to come out of power saving mode upon boot, but is the only way i can get it to work at times)

6.) Trying new display cable (DVI)

7.) Using Analog VGA as opposed to DVI



I am convinced it is hardware failure but have not been able to test whether it's the PSU, CPU, or Mobo. I am looking for any suggestions/fixes, or which part is most likely to be faulty. I have also noticed that after i manage to succesfully boot, there is sometimes a "CMOS checksum error message" but proceeds to work as normal. If this indeed random corruption of the CMOS (as a lengthy resetting and shorting of the jumpers is the only remedy) are there any fixes for this?

 

[mpilchfamily]

First thing you need to do is get a system speaker hooked up so you can listen for any beep codes. There is a set of pins next to where your power and reset switch plug into the motehrbaord where you connect a system speaker. You may need to get a control kit like this one to help.
http://www.frozencpu.com/produ...C_ATX_Control_Kit.html

When the system exhibits the problem again you should hear a series of long and short beeps. Here is a chart of the beepcodes and what they mean.
http://www.computerhope.com/beep.htm

If its a problem on the motherboard then there will be beeps. If not then its probably the video card itself. Although your PSU should have plenty of power for your system that doesn't mean there isn't a problem with it.

 

[thewalrus0034]

Thank you I will try it, it's been so hard to get any input for this problem

 

[thewalrus0034]

Alright so if there are no chassis controller to place on the pins, do i need this ATX control kit in order to plug the average computer speaker in?

 

[mpilchfamily]

All motherboard have the pins for a speaker and any speaker will do. It use to be that all cases came with a built in speaker so you can listen for any beep codes. Some motherboards even have on built into them.

Now if you have a speaker lying around you can use that. You'll have to cut the wires of the speaker and find a way to attach them to the correct pins. But your easiest rout is to get that kit which has a small speaker that is already set up to plug right into your motherboard.

 

[thewalrus0034]

ok thanks, so if there is no beep it could be the CPU or PSU (I REM'd (or w/e it's called to get a replacement, the GPU and that didn't fix it, so i don't think that's very likely to be faulty)
Oh and is frozen CPU a trustworthy site or should i look elsewhere to purchase, jw if you've had any past expierence from it.

 

[HBTech]

I will try it, it's been so hard to get any input for this problem let me check.