Flashing green grainy effect on new monitor.

Violet_Shift · Nov 30, 2021

Hi,

I'm posting this on a friend's behalf, so admittedly this is second-hand, as she's feeling anxious about asking a public forum for tech support, but I ran out of thoughts on this.

She recently got a new PC, but when she plugged in the monitor, there was a recurring thing where there'd be a flashy green grainy effect across the whole screen.

She took this picture of the effect here: (It's not at all visible on screenshots)

Initially, since this is a 144Hz monitor I thought it was an HDMI bandwidth issue, so I advised her to get a DisplayPort cable.

This seems to have helped but not cure the issue. The effect is far less frequent when she uses the DP connection.

Does anyone have any idea what could be going on here? She has the latest GPU drivers as far as she knows.

Her specs are:

i5-11400F, 16 GB ddr4, 1 TB HDD and 256 GB SSD, RTX 3060 Ti 8 GB

Hyderz · Nov 30, 2021

what is the model and brand of the monitor?

Violet_Shift · Nov 30, 2021

Her monitor is an MSI Optix G241. Seems to be a pretty standard budget monitor, and I'd not expect anything overly weird from MSI.

Bill_Bright · Nov 30, 2021

Violet_Shift said:
She recently got a new PC,

How recently? Is it still under warranty? Is the monitor new too?

She needs to try a different monitor on that computer to see if the problem is still there. If it goes away, the problem is with the monitor. If the problem appears on the 2nd monitor, the problem is in the computer.

Regardless where the fault is, if under warranty - contact tech support before doing something that voids the warranty.

ixi · Nov 30, 2021

Try installing older or newer drivers. Change cable or try different port and as well gpu.

Violet_Shift · Dec 1, 2021

Bill_Bright said:
How recently? Is it still under warranty? Is the monitor new too?

She needs to try a different monitor on that computer to see if the problem is still there. If it goes away, the problem is with the monitor. If the problem appears on the 2nd monitor, the problem is in the computer.

Regardless where the fault is, if under warranty - contact tech support before doing something that voids the warranty.

A matter of days ago - this is brand new.

Unfortunately she doesn't have access to another monitor that uses digital video - all of the others in her house are VGA.

Bill_Bright · Dec 1, 2021

Violet_Shift said:
Unfortunately she doesn't have access to another monitor that uses digital video - all of the others in her house are VGA.

Then she need to try that monitor on another computer, or connect that monitor to a DVD/Blu-ray player or even a cable TV box.

Or, most TVs made in the last 10 years or so accept digital input from a computer. She could try that.

Point is, at this point, she does not know if the problem is in the monitor, or the computer.

FreedomEclipse · Dec 1, 2021

Try setting the overdrive option to 'fast' or 'fastest' in the monitors control panel/OSD/Menu. It could be a refresh rate issue.

phanbuey · Dec 1, 2021

Actually the cable was a good idea, and the fact that it helped points to signal issues.

My advice would be to try another monitor - if the effect is gone then you may have just gotten a lemon or something went wrong in the LCD. It may just have a bad filter board in the display, one of the cables in there connecting to lcd might be loose etc....

Have her hook the machine up to another display to eliminate the possibility of video card issues and then yeah - looks to me like a monitor issue.

Processor	Intel Core i9-9900K
Motherboard	MSI Z390 Tomahawk
Cooling	NZXT Kraken
Memory	48GB G.Skill Trident Z Neo
Video Card(s)	MSI RTX 2080 Super
Storage	256GB & 1TB M.2 NVMe SSDs + 4x 3TB HDDs in RAID-5
Display(s)	Alienware 38
Case	Corsair Crystal
Power Supply	Corsair TX650M
Software	Windows 10

System Name	Custom
Processor	i9 9900k
Motherboard	Gigabyte Z390 arous master
Cooling	corsair h150i
Memory	4x8 3200mhz corsair
Video Card(s)	Galax RTX 3090 EX Gamer White OC
Storage	500gb Samsung 970 Evo PLus
Display(s)	MSi MAG341CQ
Case	Lian Li Pc-011 Dynamic
Audio Device(s)	Arctis Pro Wireless
Power Supply	850w Seasonic Focus Platinum
Mouse	Logitech G403
Keyboard	Logitech G110

Processor	Intel Core i9-9900K
Motherboard	MSI Z390 Tomahawk
Cooling	NZXT Kraken
Memory	48GB G.Skill Trident Z Neo
Video Card(s)	MSI RTX 2080 Super
Storage	256GB & 1TB M.2 NVMe SSDs + 4x 3TB HDDs in RAID-5
Display(s)	Alienware 38
Case	Corsair Crystal
Power Supply	Corsair TX650M
Software	Windows 10

System Name	Brightworks Systems BWS-6 E-IV
Processor	Intel Core i5-6600 @ 3.9GHz
Motherboard	Gigabyte GA-Z170-HD3 Rev 1.0
Cooling	Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory	32GB (4 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s)	EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage	Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s)	Samsung S24E650BW LED x 2
Case	Fractal Design Define R4
Power Supply	EVGA Supernova 550W G2 Gold
Mouse	Logitech M190
Keyboard	Microsoft Wireless Comfort 5050
Software	W10 Pro 64-bit

Processor	Intel Core i9-9900K
Motherboard	MSI Z390 Tomahawk
Cooling	NZXT Kraken
Memory	48GB G.Skill Trident Z Neo
Video Card(s)	MSI RTX 2080 Super
Storage	256GB & 1TB M.2 NVMe SSDs + 4x 3TB HDDs in RAID-5
Display(s)	Alienware 38
Case	Corsair Crystal
Power Supply	Corsair TX650M
Software	Windows 10

System Name	Codename: Icarus Mk.VI
Processor	Intel 8600k@Stock -- pending tuning
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)	ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage	Samsung 970 Evo 512GB SSD (Boot)\|WD SN770 (Gaming)\|2x 3TB Toshiba DT01ACA300\|2x 2TB Crucial BX500
Display(s)	LG GP850-B
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
Keyboard	Duckyshine Dead LED(s) III
Software	Windows 10 Pro
Benchmark Scores	(ノಠ益ಠ)ノ彡┻━┻

Processor	13700KF Undervolted @ 5.6/ 5.5, 4.8Ghz Ring 200W PL1
Motherboard	MSI 690-I PRO
Cooling	Thermalright Peerless Assassin 120 w/ Arctic P12 Fans
Memory	48 GB DDR5 7600 MHZ CL36
Video Card(s)	RTX 4090 FE
Storage	2x 2TB WDC SN850, 1TB Samsung 960 prr
Display(s)	Alienware 32" 4k 240hz OLED
Case	SLIGER S620
Audio Device(s)	Yes
Power Supply	Corsair SF750
Mouse	Xlite V2
Keyboard	RoyalAxe
Software	Windows 11
Benchmark Scores	They're pretty good, nothing crazy.

Flashing green grainy effect on new monitor.

~Technological Technocrat~