Hi Shojib,
welcome to this Forum and welcome into OSX world ...
From your Video/pics there is nothing i can guess to help you
First of All you have to Set BIOs to the more usefull settings to install OSX.
Set SATA to AHCI
Set Virtualization to TRUE
Your HW is:
microATX mobo intel DG41RQ with LGA775
Intel core 2 Quad -> OOB vanillia kernel 64bit
Intel® GMA X4500 -> works OOB no kext needed , but no QE/CI
Realtek* ALC662 audio -> AppleHDA.kext patched required install VoodooHDA.kext
Intel G41 Express Chipset
Intel® 82801GB I/O Controller Hub (ICH7)
Realtek 8111D Gigabit Ethernet card -> Kext needed here->
http://www.osx86.net/downloads.php?do=file&id=1539
User Manual mobo here ->
http://downloadmirror.intel.com/1725...01_English.pdf
OK go for installation:
First read these post and try to make USB OSX Lion boot installation, i think it can help you
Wiki OSX86 - intel DG41RQ
http://wiki.osx86project.org/wiki/index.php/HCL_10.7.0
How to install Lion on PC
http://osx86.co/f101/how-install-osx-lion-on-pc-t7279/
or you can get iAtKos Lion L1 DVD , burn it and try installation with it
iATKOS
http://iatkos.blogspot.com/2011/09/d...tkos-l1-d.html
Hints:
You have to use - 10.6.7 AppleACPIPlatform / IOPCIFamily kexts in S/L/E to fix "PCI Configuration begin" error
PippoX0