CPU or PSU bad?

tony8394

Honorable
Oct 6, 2013
36
0
10,540
hello all,
so lets start with the specs:

brand new ASUS P8B75-M/CSM motherboard Micro ATX
8GB of 1600 Mhz ram in slots 1 and 3 from the left (A1,B1)
Intel I7 2600k CPU
875w PSU
2x 500gb seagate
radeon 5870 GPU

symptom as of now: pc powers up, with "no input signal" displayed, but everything sounds fine, minus not having a motherboard speaker plugged into the "SPEAKER" slot. mobo did not come with one, will purchase tomorrow at fry's.

About a week ago some juice spilled on top of my computer from my brothers kids while i was not around. my wife called me, told me what happened and that the computer had a loud fan noise after that. i came home to find my slot 1 GPU filled with juice, juice residue dried on my motherboard (aurora r3 motherboard 46MHW-69702, not new one) and anything it had touch was surrounded by white.. time for a new motherboard. i was able to have my friend help me out a few days later to see what was still good and what was bad by swapping parts into his pc. my ram was fine, the bottom gpu ran up fine (top one was ruined). we were not able to swap processor because i have intel LGA 1155 socket and he has amd's AM3+ socket. we were not able to swap PSU's either because he had to leave to go to dinner.
so i went to fry's this weekend picked up a new motherboard and was able to get the ASUS motherboard. i got it fully installed, checked the ram slots to make sure they were correct, installed i7 from other motherboard, reapplied thermal paste, put on heat sink, rechecked all my connections and started it up. same exact thing. black screen "no input signal" and computer doesn't seem to boot up, ALSO i don't get any power to any USB ports, tried them all with old and new MOBO, don't know if thats normal before boot up or not. can't remember.
this motherboard has onboard graphics, also the i7 i have supposedly has intel hd 4000 graphics or something like that, so i tried the hdmi on the motherboard, didn't work, tried installing the good GPU, nothing.

so is this a sign of a dead CPU? the juice could have gotten in the socket, or is this a sign of faulty PSU? some of the connections had been affected.

thanks for taking the time if you have read this far.
 
Solution
Oh ouch, sorry to hear that. The first thing I'll need you to do is disassemble everything. Make sure nothing is connected to one another and everything is out of the case. You can leave the CPU and heatsink attached to the motherboard. Make sure the PSU is NOT plugged into anything, including the wall outlet.

From there, let's try a few things.

1. Install the motherboard standoffs into the case.
2. Mount the motherboard into the case and onto the standoffs.
3. Install the PSU (mount it and screw it in).
4. Plug in the 4-pin CPU power connector cable from the PSU to the motherboard.
5. Plug in the 24-pin motherboard power connector cable from the PSU.
6. Plug in the CPU heatsink fan into the motherboard.
7. Plug in the case's power...
Oh ouch, sorry to hear that. The first thing I'll need you to do is disassemble everything. Make sure nothing is connected to one another and everything is out of the case. You can leave the CPU and heatsink attached to the motherboard. Make sure the PSU is NOT plugged into anything, including the wall outlet.

From there, let's try a few things.

1. Install the motherboard standoffs into the case.
2. Mount the motherboard into the case and onto the standoffs.
3. Install the PSU (mount it and screw it in).
4. Plug in the 4-pin CPU power connector cable from the PSU to the motherboard.
5. Plug in the 24-pin motherboard power connector cable from the PSU.
6. Plug in the CPU heatsink fan into the motherboard.
7. Plug in the case's power cable into the motherboard so you can turn it on.
8. Plug the PSU into the wall outlet and turn on the computer. Verify that the CPU fan does spin. If not, stop and report back. If so, continue below with step 9.
9. Turn off the computer and unplug the PSU from the wall outlet.
10. Plug in ONE RAM module. If you have two, have the other one on standby. Do not install it.
11. Mount your HDD and install it. Make sure the SATA cable is plugged into the HDD and motherboard and that the PSU sata power cable is plugged into the HDD.
12. Install a DVI or HDMI cable from the motherboard to a monitor.
13. Plug the PSU into the wall outlet and turn on the computer. Verify that you can see the splash screen. If not, continue below with step 14. If so, stop and report back. (No, that is not a typo nor did I get them mixed up.)
14. Turn off the computer and unplug the PSU from the wall outlet.
15. Remove the RAM module and install the second one if applicable.
16. Plug the PSU into the wall outlet and turn on the computer. Verify that you can see the splash screen. Report back.

That's just a simple diagnostic to see where things lie.
 
Solution

tony8394

Honorable
Oct 6, 2013
36
0
10,540
ok so i went back and unplugged everything. i am going through it again, i am at step 8, the case fan does spin. and i actually get a splash screen. it says please enter setup to recover bios setting
 

tony8394

Honorable
Oct 6, 2013
36
0
10,540
ok so i went into settings. everything looked fine as far as voltages, temp. i clicked "default settings" and it has went back to default. i clicked save and quit. the computer then restarted, it tried to boot windows but immediately shut off. when it restarted, it said "windows had trouble starting. do you want to launch start up repair. i went to start up repair and its attempting to fix itself.
by the way. thank you very much. I've been haggling with this thing for a while now and this is the farthest I've gotten
 
Did you manage to boot into Windows successfully? I am assuming not right? If that's the case, the likely issue is that the motherboard drivers that Windows 7 was previously installed with are incompatible with the new motherboard. This is a very common issue. There are two solutions:

- Re-install Windows. Make sure you back up any files that you do not want to lose before doing so.
or
- Uninstall the old drivers from the old motherboard and install the new drivers for the new motherboard. This part can be tricky if you have little experience with it.

Unfortunately, there's no easy way to go about it. The first option is easy but a pain to rid everything by re-installing.