Hi, I read through the sticky about post boot video problems but didn't find an answer there as the PC started to give a monitor signal.
The PC I'm having trouble with was built in early 2009. For a year or so, the PSU (Altis A-550DX 550W) has been randomly making a high-pitched noise and the USB ports have become unreliable especially with a specific external HDD beeping loudly and the ports not identifying a connected smartphone at all. Figured the problem might be the PSU not giving out enough power.
So I bought a new PSU (Super Flower Leadex Gold 750W) and connected it, but on boot the system gave no signal to the monitor. The PSU was lit up, all the fans seemed to work and the keyboard gave a brief light.
Then I tried the new PSU on another computer, which booted up normally. After that I connected the PSU again to the first system but got the same issue. After this I checked to see whether it would boot up with the old PSU – same issue. Double-checked the connections, sys_fan2 connector (fan in the front of the pc) had come loose at some point so plugged that back in and also replaced a data cable that was pinned under the GPU, connected that from sata port 1 to 4.
I also plugged the new PSU straight to a wall outlet instead of an extension cord to see it got enough power. None of this helped. At this point I had booted up the system enough times to get the message “Warning!!! The previous performance of overclocking is failed and the system restored to the default settings....”. USB keyboard wasn’t responsive so I reset CMOS. Now after booting up the system continued to loading Windows but while it was loading it the display signal was lost again.
Any ideas what the issue could be or what to do at this point? Thought I’d keep trying to see whether the system can load up at all and if it does, try it out again with the new PSU. Could it be the mobo failing or a GPU or maybe even a memory issue? Any help would be appreciated!
Failing computer specs:
Motherboard: MSI K9A2 Neo (System Model MS-7388 according to DxDiag)
RAM: DDR2 8 GB, Four sticks of 2 GB each
DIMM slots 1 & 3: Corsair CM2X2048-6400C5 – 800 MHz, 1.8V, CL5
DIMM slots 2 & 4: Kingston KVR800D2N6/2G - 800MHz , 1.8V, CL6
GPU: Gigabyte Radeon HD 5700
CPU: AMD Phenom 9650 Quad-Core ~2,3GHz
Hard drives: 3 in total, 1 TB WDC WD10EADS-00L5B1, 500 GB 7200 RPM WDC WD5000AAKS-00D2B0, a 160 GB SAMSUNG HD160JJ (bought in 2007)
Working computer specs:
Motherboard: Gigabyte GA-880GA-UD3H
CPU: AMD Phenom II X4 970
RAM: 8 GB DDR3
GPU: NVIDIA GeForce GTX 770
The PC I'm having trouble with was built in early 2009. For a year or so, the PSU (Altis A-550DX 550W) has been randomly making a high-pitched noise and the USB ports have become unreliable especially with a specific external HDD beeping loudly and the ports not identifying a connected smartphone at all. Figured the problem might be the PSU not giving out enough power.
So I bought a new PSU (Super Flower Leadex Gold 750W) and connected it, but on boot the system gave no signal to the monitor. The PSU was lit up, all the fans seemed to work and the keyboard gave a brief light.
Then I tried the new PSU on another computer, which booted up normally. After that I connected the PSU again to the first system but got the same issue. After this I checked to see whether it would boot up with the old PSU – same issue. Double-checked the connections, sys_fan2 connector (fan in the front of the pc) had come loose at some point so plugged that back in and also replaced a data cable that was pinned under the GPU, connected that from sata port 1 to 4.
I also plugged the new PSU straight to a wall outlet instead of an extension cord to see it got enough power. None of this helped. At this point I had booted up the system enough times to get the message “Warning!!! The previous performance of overclocking is failed and the system restored to the default settings....”. USB keyboard wasn’t responsive so I reset CMOS. Now after booting up the system continued to loading Windows but while it was loading it the display signal was lost again.
Any ideas what the issue could be or what to do at this point? Thought I’d keep trying to see whether the system can load up at all and if it does, try it out again with the new PSU. Could it be the mobo failing or a GPU or maybe even a memory issue? Any help would be appreciated!
Failing computer specs:
Motherboard: MSI K9A2 Neo (System Model MS-7388 according to DxDiag)
RAM: DDR2 8 GB, Four sticks of 2 GB each
DIMM slots 1 & 3: Corsair CM2X2048-6400C5 – 800 MHz, 1.8V, CL5
DIMM slots 2 & 4: Kingston KVR800D2N6/2G - 800MHz , 1.8V, CL6
GPU: Gigabyte Radeon HD 5700
CPU: AMD Phenom 9650 Quad-Core ~2,3GHz
Hard drives: 3 in total, 1 TB WDC WD10EADS-00L5B1, 500 GB 7200 RPM WDC WD5000AAKS-00D2B0, a 160 GB SAMSUNG HD160JJ (bought in 2007)
Working computer specs:
Motherboard: Gigabyte GA-880GA-UD3H
CPU: AMD Phenom II X4 970
RAM: 8 GB DDR3
GPU: NVIDIA GeForce GTX 770
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