F5F Stay Refreshed Hardware Desktop There is no signal coming in to watch right now

There is no signal coming in to watch right now

There is no signal coming in to watch right now

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jornare04
Junior Member
42
05-10-2026, 08:36 AM
#1
Hi guys, I'm trying to fix a 12-year-old PC that has sat idle for two years. The issue started just one day ago: it used to work perfectly until suddenly it stops sending data to the monitor while everything lights up and starts up normally. I took out the graphics card and tested it on my main system, which worked fine with HDMI plugged in, so the signal was coming out there too. I also checked RAM using the MemOK button on the motherboard, and that one too booted without any red error lights. But I can't test the RAM on my main system because my PC runs on DDR3 while my main computer needs DDR4. So here is my question: could it be an old power supply unit (PSU) struggling to send a signal when I plug in the HDMI cable? When I use the HDMI port, my monitor turns off instead of staying on with no signal?
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jornare04
05-10-2026, 08:36 AM #1

Hi guys, I'm trying to fix a 12-year-old PC that has sat idle for two years. The issue started just one day ago: it used to work perfectly until suddenly it stops sending data to the monitor while everything lights up and starts up normally. I took out the graphics card and tested it on my main system, which worked fine with HDMI plugged in, so the signal was coming out there too. I also checked RAM using the MemOK button on the motherboard, and that one too booted without any red error lights. But I can't test the RAM on my main system because my PC runs on DDR3 while my main computer needs DDR4. So here is my question: could it be an old power supply unit (PSU) struggling to send a signal when I plug in the HDMI cable? When I use the HDMI port, my monitor turns off instead of staying on with no signal?

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rheini1
Junior Member
8
05-13-2026, 02:51 PM
#2
Yes, I'll take the yes. Can I get the Specs sheet for this stuff while we're here?
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rheini1
05-13-2026, 02:51 PM #2

Yes, I'll take the yes. Can I get the Specs sheet for this stuff while we're here?

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jonleflar
Member
181
05-13-2026, 03:54 PM
#3
CPU: Intel Core i7-3820 with socket LGA2011 and Quad Core specs at 3.6GHz speed with 130W power draw, running on DDR3 RAM at 1866MHz with a capacity of 32GB in the Corsair Dominator GT kit. GPU: EVGA GeForce GTX 980 for graphics performance. Storage includes a Samsung SSD 840 Series 250GB drive and a Western Digital Desktop Green 2TB SATA 6Gb/s hard drive using IntelliPower technology with 64MB cache, all compatible with the ASUS P9X79 LE motherboard running on KUN PC-PROD ATX platform.
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jonleflar
05-13-2026, 03:54 PM #3

CPU: Intel Core i7-3820 with socket LGA2011 and Quad Core specs at 3.6GHz speed with 130W power draw, running on DDR3 RAM at 1866MHz with a capacity of 32GB in the Corsair Dominator GT kit. GPU: EVGA GeForce GTX 980 for graphics performance. Storage includes a Samsung SSD 840 Series 250GB drive and a Western Digital Desktop Green 2TB SATA 6Gb/s hard drive using IntelliPower technology with 64MB cache, all compatible with the ASUS P9X79 LE motherboard running on KUN PC-PROD ATX platform.

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FLPFive
Member
170
05-15-2026, 12:53 PM
#4
Basically, if your power supply unit (PSU) has a rating of 750 to 800 watts or more, you will likely be okay with it.
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FLPFive
05-15-2026, 12:53 PM #4

Basically, if your power supply unit (PSU) has a rating of 750 to 800 watts or more, you will likely be okay with it.