ACPIHPQ0004. If you found this dialog when you do format& reinstall your HP laptop you can straight away to hp download driver website. Find the 3D driveguard for your laptop model. Sure your problem will solve immediatle.
If you found ACPIHPQ0004 in your machine, It won’t take long and confuse like me ..when the first time I need to instal the driver for my new hp cpq 6910p. When I went to my computer -> manage-> device manager… I saw 2 unknow device. One is HPQ 006 and other is HPQ 004.
HPQ 006 = QUICK LAUNCH
HPQ 004= 3D DRIVER GUARD
Good luck Frenz.. hope it will hepl you