I do have some weird looking non P&P devices in my Device Manager.

Anyone got a clue what the hell they are?

I also have there other suspicious drivers that does not support P&P, and their names are:

ATICDSDr
atidgllk
Beep - used, could this be removed for good somehow?
BOPOMAV
c34nb4c5
DirectX DLL register
e259q4c6
Fs_Rec
rvbedit (I killed this one already)
SSDefrag (I killed this one already)
NetGroup Packet Filter Driver
Parallel - used, could this be removed for good somehow?
YQZBNWOGRK (I killed this one already)

Can I remove/uninstall few of them?

Well, fist at all, to see all these devices, you have to use the registry tweak:



And then reboot + choose in the menu again show all devices. Then you can see these.

And true, I had a mallware infection when I was running IE. Not anymore, but some stuff can remain there.

ATICDSDr - removed, no ill effects
atidgllk - removed, no ill effects (I do overclock, but I have nVidia card (ATI mobo chipset tough) and mobo I overclock in bios)

Beep - used, could this be removed for good somehow? Is not that the "beep" speaker anyway?

BOPOMAV - removed, no ill effects
c34nb4c5 - removed, no ill effects
e259q4c6 - removed, no ill effects

Fs_Rec - removed, but it keep comming back (should be File System recognizer)

NetGroup Packet Filter Driver - part of WinPcap - installed for Etheral sniffer, removed

Parallel - removed, but it keep comming back (parallel port disabled in bios)

YQZBNWOGRK - removed, no ill effects

o, anyone know, how to get rid of these for good?

Beep - removed, but it keep comming back (I did not want beeper at all!)
Fs_Rec- removed, but it keep comming back (is this really necessary? unused all the time!)
Parallel - removed, but it keep comming back (parallel/serial ports disabled in bios)

Recently I noticed this:
ALSysIO - coretemp driver, removed

Also I wonder about those:
dmboot
dmload
Diskperf (all disk performace things are disabled already?)
driver IPSEC (IPSEC disabled in serices already?)
Fips
KSecDD
partmgr
ParVdm
VgaSave - VGA driver for emergency situations, removed yet comming back... I try disable it in Autoruns and uninstall there and we see

may one ask which is YOUR windows verison ,what your installed antivirus program is, and other protection programs? what infection did youhave and how did you seemingly clean it ?

You can disable the beep.

I've done this successfully in the past.
My info is from HERE: http://www.ericmmartin.com/annoying-system-beep/

1. Right-click on My Computer (added by me, or from Control Panel to get to Device Manager)
2. On the Hardware tab, click on [Device Manager]
3. On the “View” menu, select “Show hidden devices”
4. Under “Non-Plug and Play Drivers”, right-click “Beep”
5. Click “Disable”
6. Answer [Yes] when asked if you really want to disable it
7. Answer [No] when asked if you want to reboot
8. Right-click “Beep” again.
9. Click “Properties”
10. On the “Driver” tab, set the Startup type to Disabled
11. Click [Stop]
12. Click [OK]
13. Answer [No] when asked if you want to reboot (I always reboot)