Tried replacing video card, failed. Now getting CMOS error?

steelsaint

Reputable
Dec 6, 2015
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4,510
Ok, where to begin.

I have an Alienware Aurora R4. I wanted to upgrade my video card from a Nvidia 680 to a Nvidia 980. But, it turns out I missed something. I thought I had a 875 watt power supply which is sufficient for a 980 but then I found out I only have a 525. Ok, so no biggy. I go to put the old 680 back in and now a whole other world of hurt starts.

After putting the 680 back in, I get a successful POST, but after about 5 seconds I get a constant beeping. Nothing on screen but a blinking underscore. No option to push F2 and go into BIOS or anything. So, I started going down a list of troubleshooting techniques I use at work (I'm in IT).

1. I pull out all RAM sticks but one and test them individually, same problem.
2. Take the whole thing apart essentially and check and make sure every connection is snug and in place.
3. Boot with add on cards removed, and put them back in one at a time, same problem.
4. Put the 680 in my roommates computer to see if its the problem, boots just fine. Video drivers not quite working obviously but still.

So, just for the heck of it, I try replacing the CMOS battery. Same problem. So, I go to put the old battery back in and by mistake I forgot to put it in. And, would you believe it...everything boots fine.

I realize what has happened and open her back up and see there is no battery inside. Boot it up again, boots fine. I try putting the battery back in. It boots fine. I assume everything is ok. Until today when I go to do a restart. Same problem, POST successful but now the constant beeping is back with nothing but the blinking underscore.

As of this moment, I can use this computer but it has no CMOS battery in it which means every time I get on I have to reset my time manually or all my programs get on wonky.

I have never seen an error like this. Anyone have any ideas?

Intel i7 3.20 GHz Quad Core
16 GB RAM
Windows 7 64 bit
1 TB SATA Drive
Nvidia GTX 680 4 GB
Sound Blaster add on sound card
Computer is an Alienware Aurora R4


Unbumped.
 

steelsaint

Reputable
Dec 6, 2015
2
0
4,510
Ok, so I'm pretty sure I figured this out. After thinking about it I thought that maybe when I switched out the CMOS battery the first time, I removed some required setting in the BIOS that was required for something to run correctly. I went and downloaded the latest BIOS update for my Aurora and then put the CMOS battery back in. I ran the update and it automatically rebooted.

The reboot worked fine. I restarted the computer several times to make sure but everything seems to be in order now.

So, ultimately the problem here was something in BIOS that got removed when CMOS battery was replace during troubleshooting. A BIOS update corrected this issue.