I have almost the same problem, but I am running Windows 10 pro on my HP Compaq 8200 Elite Convertible Minitower PC. The device manager has under OTHER DEVICES: the triangle with the excimation point Next to that it states: PCI SERIAL PORT. I tried to update the drivers and that didn't work. It said it could not find anything online. Next I went to each of the processors (quad core) and tried to update them. They said they were up to date.

1. Digitus Pci Express Serial Port Drivers Windows 7
2. Pci Serial Port Drivers
3. Intel Pci Serial Port Driver

So anyone have any other ideas? They only cover up to win 8 64 bit in the drivers area.

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Bluetooth. Modem.

Monitor. Mouse. Keyboard. Mainboard. Chipset. Scanner. Network.

Notebook. MIDI-Keyboard. MP3 Player.

Multimedia Player. All-in-One Printer. Barebone.

BD/DVD/CD. PC Camera.

PDA. Plotter. Print Server. SATA. SATA-RAID. SCSI.

Digitus Pci Express Serial Port Drivers Windows 7

SCSI-RAID. Smartphone. Sound. Tablet PC. Tablet. Tape Backup.

Telephony. Trackball. TV Tuner. UPS. Card Reader. Controller.

Copier. Digital Album. Digital Camcorder.

Digital Photo. Fax Machine. GPS Receiver. IC Controller.

Pci Serial Port Drivers

IDE-RAID. IrDA. Joystick. Video Capture.

Intel Pci Serial Port Driver

Voice Recorder. Add-on Card. Other.