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Replacing parts in gaming PC, display not working...

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May 30, 2012 6:10:30 PM

Hello,

So I was a moron and spilled a glass of water right onto my gaming PC... in the past few months I have been replacing parts. According to Fry's the only thing that needed replacing was the mobo... well new mobo, new cpu, new PS, and finally today a new video card later, the system is still not functional. It turns on and thankfully the red CPU light is no longer on, but the VGA LED red light is still on after installing the new video card. I have looked at it so many times and I really cannot figure out what the problem is unless maybe the parts are incompatible and I didn't realize.

My system:

new Asus p7p55d mobo (Asus Pro upgraded from standard)
new EVGA geforce gtx 550 ti card (upgraded from gtx 465... now wondering if my old card was actually working and there is soething else wrong)
new corsair 750w PSU (replaced older model of the same as while the comp turned on before, the theory that it may have had a short and was not powering the graphics card was posited, this may have also been an uneeded purchase)
i3 intel cpu (temporary replacement for the old i5 that was actually damaged, going to be getting another i5 but an tapped out)
6gb ddr3 1333 corsair ram
1tb cavier HD
don't remember the model of the wireless card, there is also a lg cd drive in there, but I wouldn't think that would affect the display in any way.

The only indicator the mobo gives me again is teh VGA LED red light being on... is there anything that would be preventing my graphics card from working according to the above? I've only been able to find folks with insufficient PSUs complaining, but 750wt is more than ample. My monitor is functional... just kind of at wits end here.

a c 78 B Homebuilt system
a b 4 Gaming
May 30, 2012 7:16:25 PM

Try the video card in the other slot and tell me what happens.

Both video cards if you still have them.
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May 30, 2012 9:38:17 PM

Raiddinn said:
Try the video card in the other slot and tell me what happens.

Both video cards if you still have them.


Both cards have been tried in all three slots with no luck :( 
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a c 78 B Homebuilt system
a b 4 Gaming
May 31, 2012 2:31:13 AM

Edit the original post to delete your email address, btw, if you post it in here you will get a lot of porn email, nigerian 419 scam email, and so on. At least if you are going to post your email on the internet (I wouldn't suggest it), do it like this:

malachitephoenix at gmail dot edu or malachitephoenix(at)gmail(dot)edu

That makes it tougher for all the programs that scrape webpages to recognize the text as a valid email address.

Going back to the problem, let me see if I have all this right:
1) You spilled water on the PC, sucks but it happens.
2) Sparks fly yadda yadda yadda
3) You take it to Fry's so they can figure out what is wrong with it
4) They tell you the problem is the motherboard and you should replace it
5) You replace the motherboard with something pretty much the same
6) Video doesn't make it to the monitor

Question: Did you try the video card you had in all the available slots before proceeding to the next step?

7) You get the idea to switch out the CPU.
8) Same problem
9) You get the idea to switch out the PSU.
10) Same problem
11) You get the idea to switch out the video card
12) Same problem

Questions: What gave you these ideas? A best guess based on your computer knowledge or did you take it back to Fry's a second time? Why didn't you have the idea to switch out the RAM?

13) You come here with this topic.

Also, could you perhaps please try to be a little clearer about which exact parts you have. I can't really tell you if there is a parts incompatibility with only the information you provided.

For instance, the p7p55d motherboard might be -e or pro or deluxe versions. The i3 processor could be a 500 series (like a 540) or a 2000 series (like a 2100 or 2120).

The 2000 series wouldn't work in the p7p55d motherboard, the 500 series would.

Also, do you know anybody that would be willing to try those video cards in their computer just to verify that at least one of them is a good card? It could be that the first one broke and the second one was DOA. If you could try some of your parts in somebody else's PC that would really help narrow down the problem.

Also, it would help if you knew someone that could let you borrow a card that they know is working long enough to try it.

Friends, relatives, etc are possibilities. Even your IT staff where you work might be OK with it if it is in an enterprise environment with in house IT staff as long as you agree to sign for the parts.

Also, I want you to try taking the battery out for 30 min and put it back in.

Then take out two of the RAM sticks and just leave one in whatever slot (I would suggest the farthest left). Then try to turn it on. If nothing happens move it one to the right and try turning it on again. Do that until you get to the end. If none works then take out the one you were using and try a couple different combinations with the remaining 2 sticks in various slots.

Every stick in every slot would be ideal, but it takes forever. The above is the best way to get test results that are most likely accurate in the shortest amount of attempts. If you do less than that you could get false positives or negatives.
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May 31, 2012 10:51:00 AM

I'm going to ignore the majority of the post, only because I never thought to check the RAM. :pfff: 

I don't work with computer parts for a living, this was my first build before the replacements and no I did not think to check the RAM. If you are as anal about things you know well as I am I understand your condescension.

-I took the PC apart and let the parts dry for roughly 3 weeks, to be on the safe side, after maniacally unplugging everything as quickly as I could... luckily it was only water
-the video card was tested before anything was bought and was shown to work on another system at my friend's IT department at work but did not work in my system
-I stated that the mobo was the pro version, the i3 is the 540 version... I didn't mention that but I do know the differences, the post was made during a bought of frustration
-A friend loaned me a working pci e card and it did not work in my system before I replaced anything
-I work from home and go to school (not for comp sci, I know a handful of programming languages but while I find the hardware mechanics interesting I don't know nearly enough about them... if I knew everything about how every system I wanted to know everything about my brain would likely explode, plus I would have to live the course of several lifetimes in hyperspeed), no IT department in my apartment :p 
-Take the battery out for 30 minutes? On my desktop? :D 


Sarcasm aside thank you for pointing me in the right direction. Not offended, learned something new. I laughed hard at the email bit, I do know the precautions when posting email - my email addresses are just not really that sacred to me and don't contain personal info (I'm fairly out of the grid... no credit card numbers to sell etc)... I rather enjoy getting email from nigerian princes or those who print their fake American names in all caps and say they are a part of a church or being held hostage and want you to handle their secret fortune or try to rent out this mystery apartment where you have to send them money to receive the keys. It's fun to retaliate and waste their time with equally stupid crap or a counteroffer/fake story if boredom hits.

Anyhow, thanks again. I will update on how everything goes.
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a c 78 B Homebuilt system
a b 4 Gaming
May 31, 2012 2:39:52 PM

I did mean the battery in the desktop PC. It is a regular watch battery, I believe the part number is CR 2032 if you want to look it up. There is a plate holding it in and the battery will be ejected if you apply a small amount of force pinpointed on the plate.
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June 6, 2012 11:08:41 AM

the RAM was fine, though I did buy replacement just in case. No change. I did notice that when turning the computer on all the fans work except for the fan on the power supply. I found some info about jumpers and the CMOS battery and will try what a tutorial on Super PC recommends, but am a bit worried about why the PSU fan is not working.
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a c 78 B Homebuilt system
a b 4 Gaming
June 6, 2012 12:17:26 PM

If I had a new PSU and the fan didn't come on, I would probably try to RMA it. Most anything you can do to fix that would require opening up the PSU shell and voiding the warranty.
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