Hello uofamis22,

I noticed in another thread that you were having issues with this kernel panic when you tried to restart..

Debugger called: <panic>
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x7f2176d8 : 0x12b4c6 *0x45ec20 0x7f21770c 0x13355c 0x0)
0x7f217728 : 0x1ab0fe (0x468ecc 0x79243832 0xe 0x468678)
0x7f217808 : 0x1a1703 (0x7f217820 0xb9f4000 0x7f2178f8 0x79243832)
0x7f217818 : 0x79243832 (0xe 0xb920048 0x7f210010 0x10)
0x7f2178f8 : 0x7924030c (0x0 0xcffa08e1 0x0 0x8)
0x7f217958 : 0x7924e933 (0xac43b08 0x0 0xcffa08e1 0x0)
0x7f2179d8 : 0x7924c959 (0xac43b08 0xaa881e8 0xab9ec08 0x0)
0x7f2179f8 : 0x7924bce1 (0xab9ec08 0xab9edc4 0xab9ec08 0x0)
0x7f217a48 : 0x79249ddc (0xab9ec08 0xac93548 0xc 0x7f217a88)
0x7f217aa8 : 0x79245b36 (0xab9ec08 0xad7a408 0x0 0x79245563)
0x7f217af8 : 0x79242605 (0xad7a408 0x3 0xaa88328 0x7926618f)
0x7f217b38 : 0x7924271d (0x6 0x0 0x0 0x7923a53f)
0x7f217b68 : 0x7924ab36 (0x7f217c08 0xac8e9c8 0x7f217b98 0x7923b79a)
0x7f217b98 : 0x7924ad25 (0x7f217c08 0xb8eb698 0x0 0xe)
0x7f217be8 : 0x7924577e (0x7917a3dc 0x7f217c08 0x7924ef18 0x11d)
0x7f217c38 : 0x7924c6a6 (0xab31028 0x7917a3dc 0x7f217c74 0x0)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AppleACPIPlatform(9.98.)@0x792230 00->0x79259fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x791c5000
dependency: com.apple.iokit.IOACPIFamily(9.9.9)@0x791dc000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
9J61


I'm having that same kernel panic, the install goes fine and all hardware works perfectly until I try to restart, and i get it wether i have voodoohda checked or not, and speedstep is disabled. Did you get the problem sorted or do you still have problems with it? Btw im also using a Studio 540, mine has a core 2 duo rather than a quad but other than that the hardware is identical.