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MSI b85-G43-Gaming not booting?

Jan 24, 2022
55 (0.44/day)
This sort of links into my last post but it's sort of a separate issue. I have been given a non-booting PC with an MSI B85-G43-Gaming motherboard in it with a i7 -4770K CPU in it to fix. It doesn't boot up.

I have tried, another PSU, installing a beep-speaker, no beeps, adjusting the RAM, no RAM, one stick the other stick, re-seating the CPU, checking the pins, a jumper pin CMOS re-set, a CMOS battery out, CMOS reset, a new CMOS battery, removing all the connections to the board, removing the video card and using the internal graphics system and still it won't boot. The fans on the board turn on but nothing else.

I think its a dead board. Now the thing is, looking around the Ebay, it would seem that there are quite a few vendors selling BIOS chips for this motherboard which I find unusual, is this because this board had poor quality BIOS chips that fail? I also can see that this board is fairly rare and there aren't many about unless you get one from China. This suggests that it might have not been very long-lived in Europe, not surprising perhaps as the CPU wasn't around for long either.

Any suggestion on what else I could try to get it to boot or comments about this motherboard? This version of the board doesn't have dual-BIOS either.


~Technological Technocrat~
Apr 20, 2007
22,341 (4.05/day)
System Name Codename: Icarus Mk.VI
Processor Intel 8600k@4.8Ghz
Motherboard Asus ROG Strixx Z370-F
Cooling CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro|5xML140 Pro}
Memory 32GB XPG Gammix D10 {2x16GB}
Video Card(s) Gigabyte 1080Ti Gaming OC|Accelero Xtreme IV
Storage Samsung 970Evo 512GB SSD (Boot)|WD Blue 1TB SSD|2x 3TB Toshiba DT01ACA300
Display(s) Asus PB278Q 27"
Case Corsair 760T (White)
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Corsair AX760
Mouse Logitech G900/G502
Keyboard Duckyshine Dead LED(s) III
Software Windows 10 Pro
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Update the bios
Jan 24, 2022
55 (0.44/day)
Yes, this is what I am going to try to do before I do anything else drastic to this PC. Interestingly I have just had another one in to look at. An Asus Sabretooth a Z97 chipset...no less and it is not booting either....well it is sort of....

After a few hard power downs and CMOS resetting and pressing of the MEM OK button it did post then it said updating BIOS do not unplug etc...then just sat there for 20 mins, I had to power it down. It is trying to update the BIOS every time it "boots" now and it's failing....So I will try to use the BIOS flash back feature and do a USB update...hopefully this will fix this one. Thankfully turning it off after it getting stuck on updating BIOS hasn't made it any worse anyway and at least it is almost working....It's 75% a PC so there is hope for this one...


The Exiled Airman
Jul 2, 2007
35,867 (6.59/day)
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Sounds like cpu is toast
Jan 24, 2022
55 (0.44/day)
Sounds like cpu is toast
Really? Do these CPU turn to toast more easily than other ones? As it happens I have two PC's here now both of them won't boot and I think they have the same CPU's. I think I might take the opportunity to swap the CPU's around and see what happens. The Asus Sabretooth Z97 version1 is telling me that the CPU is in-operable....