|
Newly built pc won't start
|
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 19:00 |
Link to this message
|
Hey everone, I could really use your help.
I just put together a new pc and it won't boot up. I can hear a fan turn on (I think it's the PSU fan) but I get no display.
I have a XFX nForce 750a SLI Mobo in it. Over by the RAM there are four red LED lights on it than are on. They ar labeled LED_DIMM1, LED_DIMM3, LED_DIMM2, LED_DIMM4.
I have a theory that my power supply might be too weak for the system.It's a 550w PSU.
Any help would be appreciated!!!!
and thanks in advance :)
Specs:
XFX nForce 750a SLI Mobo
AMD 9500 Q4 2.2ghz
8GB (4x2gb) Corsair dual-channel DDR2
Seagate 500gb hd
2 XFX 9800GT video cards SLI
3 PCI cards
"My train of thought left the depot with no cargo." |
|
Advertisement
|
|
|
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 19:18 |
Link to this message
|
I've been doing some studying on DIMM and it seems to be about the RAM so I tried reseating it, but it didn't do anything
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 19:26 |
Link to this message
|
|
I think it's unlikely, but what brand is the power supply? (Wattage is almost irrelevant compared to brand as most cheap PSU brands lie severely about how powerful their units are)
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 19:37 |
Link to this message
|
|
It's an Ultra LSP550
For more info: [url=http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276574&CatId=106][/url]
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 19:40 |
Link to this message
|
Was the system a TigerDirect barebones kit? They tend to use XFX boards and Ultra power supplies. Neither are particularly good.
What happens if you boot the system with just one stick of RAM installed? (Try different sticks to be sure)
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 19:48 |
Link to this message
|
|
It was a TigerDirect Barebones. I tried just one stick (a couple different ones) and the correcponding light lit up and it didn't boot. I swear I saw the cpu fan twitch though when I turned the psu back on (It may have been doing that the entire time though).
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 19:50 |
Link to this message
|
|
The CPU fan would usually more than just twitch. Do the hard disks and graphics fans power up? Even if a system is failing POST, the graphics card fans and hard drives will spin up. If they don't, then it's probably a faulty PSU, or the system is running an emergency shutdown (did you attach the CPU cooler correctly?)
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 19:56 |
Link to this message
|
|
Nothing else spins up. I'm not even sure how the cpu cooler could be on wrong, I didn't realize there was more than one way for it to go on, but I'll check.
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 19:57 |
Link to this message
|
|
Check that. If no luck, it's almost certainly a dead PSU.
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 20:08 |
Link to this message
|
|
When I pulled the cooler off I noticed this weird substance between the cpu and the cooler. It's hte exact same size as te cpu. It turned my finger blue. I have no idea what this means
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 20:12 |
Link to this message
|
|
It's thermal paste, and it's meant to be there.
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 20:22 |
Link to this message
|
Ok I put the cooler back on, put one stick of RAM in and tried it. Same thing happened but I definetly located my sound and it appears to be th psu whining. I'm going to take a multimeter and test it now.
Thanks so much for your help so far :)
"My train of thought left the depot with no cargo." |
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 20:34 |
Link to this message
|
|
I've got a good question now. If the psu is dead how am I getting the red lights on the mobo?
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 20:37 |
Link to this message
|
|
PSUs have two power modes, a main and an auxiliary, when they shut down, they run in the auxiliary, they don't turn off altogether.
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 21:01 |
Link to this message
|
|
Ok my multimeter showed that the mobo connector had power, but the peripherals connectors had no power.
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 21:20 |
Link to this message
|
|
i.e. the PSU is in a standby state.
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 21:27 |
Link to this message
|
|
So would it be safe to say the psu is ok?
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 21:37 |
Link to this message
|
|
No, I still think the PSU is the problem.
|
|
banditxkr
Junior Member
1 product review
|
3. March 2009 @ 22:04 |
Link to this message
|
|
That being the case, tomorrow i will try it out in an older system and if this is the case I'll replace it. Do you think this psu is powerful enough to run this system or should i think about an upgrade?
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
3. March 2009 @ 22:06 |
Link to this message
|
Realistically, no. I would recommend a better quality unit, such as a Corsair TX 650W.
|
|
banditxkr
Junior Member
1 product review
|
4. March 2009 @ 18:00 |
Link to this message
|
You were right, the psu is dead. I'm now returning it for a refund and am buying Corsair one.
Thanks for your help and advice :)
"My train of thought left the depot with no cargo." |
AfterDawn Addict
4 product reviews
|
4. March 2009 @ 18:21 |
Link to this message
|
|
No problem.
|
|
banditxkr
Junior Member
1 product review
|
11. March 2009 @ 19:41 |
Link to this message
|
|
Ok, I'm looking for help again. I got the new psu that sammorris suggested to me, but I still have the original problem. It doesn't start and I still got the same 4 lights on the mobo.
Thanks in advance
"My train of thought left the depot with no cargo." |
|
vballstud
Suspended permanently
|
11. March 2009 @ 20:39 |
Link to this message
|
Originally posted by banditxkr:
2 XFX 9800GT video cards SLI
3 PCI cards
Have you tried just installing one video card/PCI card at a time?
|
|
Advertisement
|
|
|
|
banditxkr
Junior Member
1 product review
|
11. March 2009 @ 20:49 |
Link to this message
|
|
I haven't but I shall try that tomorrow and get back to you as soon as I can.
"My train of thought left the depot with no cargo." |
