jpdreamer Posted October 25, 2007 Share Posted October 25, 2007 I received a VX550W today and installed it in my PC, replacing the previous power supply. It seemed to install just fine, but then after running the PC for about 10 minutes (while in the midst of installing the most recent drivers for the graphics card), the monitor went black and I started getting a beep from the computer every 20 seconds or so. I turned off the PC and attempted to restart (thinking something went wrong in the video driver installation). However it would not boot up. I then removed the new graphics card and went back to usign the onboard graphics - still would not boot up. Switching back to my old power supply I was able to run the system without issue (however, not with the new graphics card - the reason for the new PSU). Failure mode on the VX550W was: turning off the main switch on the PSU, letting it rest for a few seconds, then flipping it back on resulted in the psu fan starting to spin and the computer's power LED flashing, but both immediately stopping. Attempting to further power on the PC had no effect. To me it seems that the PSU is bad - but it is odd that it ran for 10 minutes with no problems then died. Thoughts? Oh, and almost forgot to add, when I jump to green and black wire on the motherboard connector the fan runs just fine. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 25, 2007 Corsair Employee Share Posted October 25, 2007 What type of motherboard do you have? Link to comment Share on other sites More sharing options...
jpdreamer Posted October 25, 2007 Author Share Posted October 25, 2007 It's an HP m7750n PC, so has the ASUS A8M2N-LA motherboard. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 25, 2007 Corsair Employee Share Posted October 25, 2007 You may want to contact HP and find out if this system requires a proprietary PSU. Do you have any other system that you can test the PSU on? This PSU has over-current and over-voltage protection circuitry, and if the board is going out of spec on boot up, then the PSU will shut itself off. Link to comment Share on other sites More sharing options...
jpdreamer Posted October 25, 2007 Author Share Posted October 25, 2007 I read that, but I wasn't even getting to boot up, at least not after that initial boot. Just flipping the switch on the back of the PSU would cause the fan to spin for a split second then stop. I talked to HP and they didn't say anything about requiring a propriety PSU (of course, they said they only recommend I use a PSU bought from them at a steep premium). The weird thing was they said it has only been tested up to a 470W PSU, unless maybe i don't understand something about motherboards I didn't think putting in a higher rated PSU would be a problem, though maybe I should use the 450W instead? I don't have another system to test on, the old system dying was the main reason I bought the new one. :) Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 26, 2007 Corsair Employee Share Posted October 26, 2007 You may want to ask them if any aftermarket PSUs would be compatible with this system. Our PSU is high efficiency and as I mentioned before has over voltage and over current protection circuits built into it, so if the board they use does not follow standard ATX spec, or goes out of spec, then it may not be compatible. Link to comment Share on other sites More sharing options...
jpdreamer Posted October 26, 2007 Author Share Posted October 26, 2007 The second rep I talked too indicated that it was compatible with a standard aftermarket PSU. Link to comment Share on other sites More sharing options...
jpdreamer Posted October 26, 2007 Author Share Posted October 26, 2007 Ok, reinstalled the corsair PSU and it boosted up fine. I'll run it through a couple cycles and see if I get a reoccourance of the problem. Link to comment Share on other sites More sharing options...
jpdreamer Posted October 26, 2007 Author Share Posted October 26, 2007 Alright, some more data: If I power off the psu for 10 or so seconds, then power it back on I can boot up fine with no issues. However, when I shut down the switch on the front of the case is unresponsive untill I power down the PSU for 10 seconds or so, after which I am able to boot up normally. Similarly, if I have the computer enter sleep mode, I have to power off the CPU for 10 or so seconds before I can power up the computer again. Maybe something about the restart is giving it issues? I did notice that the computer (with the supplied PSU) will automatically power its self back on if it experiences a breif (ie, 1 or 2 second) power loss, is that standard now? Maybe the PSU is having issues with that part of it's operation? Edited to add: In reseaching the PSU that came with the system, it's a Bestec that supports "remote on/off". (it doesn't have a toggle switch on the back). Is that a non-standard feature that the Corsair PSU doesn't like? Final edit: Tried putting the the new graphics card - no luck. System refused to boot even after powering off PSU for 10 seconds and then powering on and pressing front CPU power. Fans would make a breif turn, then stop, quick flash from the front power LED. Removing the graphics card resored the "have to power off teh PSU for 10 seconds then I can get the CPU to boot" mode. Link to comment Share on other sites More sharing options...
jpdreamer Posted October 26, 2007 Author Share Posted October 26, 2007 To check the graphics card, I installed it with the old 300W power supply and it booted up fine and works. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 26, 2007 Corsair Employee Share Posted October 26, 2007 If you would like, we can try replacing the PSU for you. Please follow the link in my signature “I think I have a bad part! Or “Tech Support Express” and we will be happy to replace them or it, please note that you are posting from the forum! Link to comment Share on other sites More sharing options...
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