Motherboard VGA Debug LED Stays On After GPU Installation: Isolate Video Output
A new graphics card leaves the motherboard VGA debug LED on at POST. Check monitor input and connect display cable to the GPU output, not…
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PC desktop and laptop problems, operating systems, hardware, software and drivers.
PCIe Riser Cable Causes No Signal: Test Link Generation and Seating
Computer boots without a riser but shows no video when GPU uses a PCIe extension. Confirm the GPU functions when installed directly in the motherboard…
Read solution →USB4 Dock Does Not Charge Laptop: Distinguish Power Delivery from Display Support
External monitors and USB ports work but charging never starts through a USB4 dock. Check the laptop required wattage and dock USB-C Power Delivery output.…
Read solution →PC Has No Display After CPU Upgrade: Check BIOS Support and POST Status
Fans spin after replacing a CPU but the monitor stays black. Check motherboard CPU support list and required firmware revision; reinstall the previous supported CPU…
Read solution →Laptop Battery Detected but Not Charging: Separate Conservation Mode from Failure
Laptop reports plugged in without charging percentage. Check vendor battery threshold or conservation charging mode; turn off a configured charge threshold if appropriate and retest.
Read solution →External GPU Enclosure Not Detected over Thunderbolt: Validate Link and Authorization
An eGPU enclosure powers on but does not appear in Device Manager. Confirm host port supports PCIe tunneling rather than USB-C only; approve the device…
Read solution →Desktop Beeps Five Times at Startup: Interpret Vendor-Specific POST Codes
A desktop emits five short beeps and does not complete POST. Identify the exact BIOS vendor and motherboard model before interpreting beeps; reseat only accessible…
Read solution →USB Devices Disconnect Under Load: Diagnose Hub Power and Controller Resets
Mouse, headset or storage disconnects when many USB devices are connected. Compare direct motherboard ports against bus-powered hubs; move high-current devices to powered hubs or…
Read solution →PC Shuts Down Seconds After Power On: Isolate PSU and Motherboard Faults
PC Shuts Down Seconds After Power On: diagnose a PSU protection circuit trips and distinguish it from a motherboard short or cable fault prevents POST…
Read solution →DDR5 Memory Training Loop: Diagnose Long Boot and Failed POST
DDR5 Memory Training Loop: diagnose memory training retries under EXPO or XMP settings and distinguish it from a DIMM is marginal or seated incorrectly before…
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