New CPU installed but monitors not turning on.

NawMateYou

NawMateYou

NawMateYou

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Hello - Help is very much appreciated. Please see the below my current gaming PC - I received my new CPU today which is AMD Ryzen 7 5800X3D Cache Eight Core 4.5GHz (Socket AM4) Processor. I removed my old CPU & put my new one in. Turned my PC on but my monitors, mouse & keyboard wouldn't turn on. Took the CPU back out tried it again but I got the same result. I decided to put my old CPU back in but after 10-15 seconds my PC would randomly turn off, this keeps happening.

Could anyone point me in the right direction as what to do next?

Kolink Modular Power 700W 80 Plus Bronze Modular Power Supply
Kolink Void RGB Midi Tower Case - Black Window
Phanteks RGB LED Strip Starter Kit (PH-LEDKT_CMBO)
AMD Ryzen 7 3700X Eight Core 4.4GHz (Socket AM4) Processor
Zotac GeForce RTX 3070 Twin Edge OC LHR 8GB GDDR6 PCI-Express Graphics Card
Kingston A400 240GB SATA 6Gb/s 2.5" Solid State Hard Drive
Seagate BarraCuda 2TB 7200RPM 256MB Cache Hard Drive
Alpenfohn Brocken ECO Advanced CPU Cooler - 120 mm
MSI MAG X570 Tomahawk WiFi (AMD AM4) DDR4 X570 ATX Motherboard
Corsair Vengeance LPX 32GB (2x16GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit - Black
ASUS Xonar SE 5.1 PCI-E gaming sound card with 192kHz/24-bit Hi-Res Audio
SW-18A-MS Microsoft Windows 10 Home Advanced - Systems
 
Pc needs to be stable before attempting bios update
If its turning off
After 15 seconds don't try bios flash
Your board has bios flashback/equivalent msi name for it
Could try with no cpu installed as long as the pc
Isn't still shutting off in 15 seconds

And yes as tetras just said
Should have cleared cmos
 
i am more worried by the fact that he said he put the old cpu back and its not working..
maybe the cooler was not mounted correctly and its shutting down from over heating?
 
Use Flash Bios Button to update your bios. (i had to use a USB2 memory stick)

You can use the button with all components installed, but seing as you have problems with stability i would remove everything and just have the PSU attached (24 pin and 8 pin)

 
I wouldn't be trying to flash the BIOS at all until the OP has addressed the stability issues. You run the risk of borking the board for good if the unit switches off halfway through a flash.
 
If you use display port for your gfx to monitor connection remove it and use HDMI.

I had the same issue when upgrading a CPU recently. The system did not post when using display port but then worked fine using hdmi. Once I had booted successfully once I could the reconnect the display port monitor.
 
I know it will be annoying but go back to basics. Your board has diag LEDs near the 24 pin cable. Remove all peripherals, PCIe cards and memory leaving only CPU (3700X), mobo and PSU and test. Of course check your 24pin and 8pin PSU cables are connected at both ends. Observe and let us know what LED the board halts at if any. Also I would check if your PSU came with a PSU tester. If not then buy a cheap PSU tester online. Considering the system is cutting out after 15s and not power cycling then I think mobo or PSU is the culprit.
 
coupe69 said:
I wouldn't be trying to flash the BIOS at all until the OP has addressed the stability issues. You run the risk of borking the board for good if the unit switches off halfway through a flash.
Click to expand...
the bios flash button gets around this, it's one of the reasons the flash button on msi boards exists to begin with, the computer is left off with everything detached from the board, and the usb ports, with the two main connectors connected
it's all in the video that Freddie kindly posted, but here id an alternate video if you want further confirmation on the process
it's not really a stability issue btw, a lot of boards need a more recent bios to make the 508003d compatible, this is the real problem that the OP has had, if you google his motherboard you will see that it only supports the 58003d with the bios, version 12 or newer, he should have done this in advance of installing the 58003d cpu!
the only tricky thing is the bios fils on the usb needs to be renamed MSI.ROM.
 
Last edited:
Threepwood said:
the bios flash button gets around this, it's one of the reasons it exists to begin with, the computer is left off, I'm not actually sure where the power comes from to do the flash, i can only assume it must come from the cmos battery
Click to expand...
Could be wrong
But think you need a psu connected
Even when pc is turned off
The psu must supply some power
Since can still use usb ports for charging if pc is off
Or use wake on lan etc
if so and your psu is switching off/restarting every 15 seconds
Not going to complete bios flashback
 
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