in 2007, hp compaq 6515b is a very popular laptop computer that has folowing configuration:
motherboard: M690T mobile chipset
CPU: AMD Turion 64 X2 TL-62 (1.8 - 2.2 GHz)
Memory:1024MB(standard)
Memory max supported: DDRII 4096M
Harddisk: 120GB
harddisk speed: 5400 RPM
optical device: DVDRW 8/4×5×6×8×10×24X, support DVD-SuperMulti
Display(inch): 14.1 TFT LCD(1280×800)
Weight(kg): 2.27KG

please install following in numeric order.
1 .uaa
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32646.exe

2. audio driver
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32906.exe

3. video driver
ftp://ftp.hp.com/pub/softpaq/sp33001-33500/sp33074.exe

4. MODEM
http://h50176.www5.hp.com/local_drivers/24253/sp33050.exe

5. network
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32632.exe

6. wireless network. 802.11
ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34152.exe

HP quick key
ftp://ftp.hp.com/pub/softpaq/sp33001-33500/sp33035.exe

all in one card reader
ftp://ftp.hp.com/pub/softpaq/sp33001-33500/sp33416.exe

touchpad driver
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32647.exe

finger printing management program.
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32946.exe

finger printing recognise
ftp://ftp.hp.com/pub/softpaq/sp33501-34000/sp33833.exe

AuthenTec Finger print Driver (necessary only if above fingerprinting system not work)
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32609.exe