Blank screen after CPU upgrade (T9600) in Compaq CQ60 series

Hi all.

The model:
I recently decided to upgrade my Compaq Presario CQ60-119TU purchased in 2008.

The upgrades:
Existing CPU: Intel Celeron T1600 (1M Cache, 1.66 GHz, 667 MHz FSB
Replacement CPU: Intel Core 2 Duo T9600 (6M Cache, 2.80 GHz, 1066 MHz FSB)

The laptop manual states this CPU as the best spec'ed replacement CPU I can put in the laptop.

Prior to this I upgraded to the latest bios which is F.65. All was working well with the T1600 at this time.

Problem:
After replacing the CPU and pressing the power button the laptop boots up briefly for a couple of seconds and then powers off for a couple of seconds. It reboots and stays on (CPU fan is running) but there is nothing on the screen at any time .

If I replace the old CPU the machine boots up with the screen displaying text - so video appears not to be the issue (well ...not broken at least)

Any suggestions on how to get this CPU to work or is the behaviour described that of a defective part Thanks in advance.

 

Your CPU (T9600) is not supported, the Celeron T1600 is supported by the Intel GL40 chipset (probably what your motherboard has) and the T9600 will only work w/ the Intel GM45 chipset (not your laptop, comes w/ integrated graphics like my T61). If you want to upgrade your CPU to a better compatible CPU, then get the Intel Celeron T1700 that clocks at 1.83 GHz.

 

Yup, I'll bet that there are 3-4 mobo revisions listed in the service manual.

 

Thanks for the suggestion/info but I'm fairly sure this is not the issue. The manual states the T9600 as being compatible to this chipset which is confirmed by the person I spoke to at HP technical help who also says the motherboard has had no revisions. Incidentally, the integrated graphics chip on the mobo is a x4500 HD. @AESdecryption - A T1700? I'm not sure why one would bother upgrading the CPU for only 0.17 Ghz extra processing power and no improvement on L2 cache.

 

Looking at HP's service manual, it shows 3 possible Intel chipsets offered for the CQ60/G60 series: GL40, GM45 and PM45. Best thing to do is post a CPU-Z screenshot of your motherboard's chipset and we can figure out why it isn't working. Also could be a defective processor (rare albeit).

 

I won't bore you with the details but a screen capture was out the question. I'll provide part of saved text report. I fear the chipset is the GL40:

Chipset
-------------------------------------------------------------------------

Northbridge Intel GL40 rev. 07
Southbridge Intel 82801IM (ICH9-M) rev. 03
Memory Type DDR2
Memory Size 2048 MBytes
Channels Single
Memory Frequency 332.5 MHz (1:2)
CAS# latency (CL) 5.0
RAS# to CAS# delay (tRCD) 5
RAS# Precharge (tRP) 5
Cycle Time (tRAS) 15
MCHBAR I/O Base address 0x0FED10000
MCHBAR I/O Size 4096

 

that sounds like its not compatible with the board.


I tried to install a 1333fsb cpu into a 1066fsb max board before upgrading bios and I had exact some issue, Blank screen and fans only.

 

The GL40 only support CPUs with a max FSB of 800MHz. So, if you want to max out your notebook you have to find a C2D T9300 or T9500. Both CPUs have a FSB of 800MHz, they're compatible with your chipset.

The C2D T9600 isn't compatible due to the FSB of 1066MHz.

 

the t8100/t8300($50ish) is a better value the t9300s are still $110+

 

That's even a better solution, I agree. The difference is that you'll miss 3MB L2 cache (you get 3MB instead of 6MB) but you won't notice that in performance

 

Thanks for your help everyone. I really appreciate your input. (but not the T1700 suggestion )
I bought a T3400 last night on eBay for about AU. $26 with postage. It's not a sexy processor (still the same cache RAM and 667 FSB) but at least I know it will work with a GL40 chipset (and most likely in my laptop). The result: I have gained 0.5G of processing power and moved away from a Celeron .
The clincher: another thread here suggests several users found going from a T1600 to a T3400 makes a noticeable difference, which includes gaining extra run time with battery use.
I did briefly consider a '800' CPU as Ikhebook had upgraded from a Celeron 575 to the T9300. However, this was in an Emachines lappy.
I can't risk having another useless CPU sitting around because my so freaking limited bios won't support it. Unless I have personal evidence of someone running the 'higher end chips' in the Compaq CQ60-119 series I will have to say this is not an option. "Once bitten, twice shy" you may say! Anyways ....it seems there is little to be gained from having a slightly faster FSB if that is the only difference.
Bottom line: I can't afford to spend any more money on this thing (have also purchased extra RAM and a new larger HDD). Now...Used T9600 anyone? (that's a joke... hope I don't get into trouble.)

 

You may have missed the point...

It's not your bios, it is the chipset on the particular revision of motherboard your machine has.

 

dude I would have whipped your hand off if it was 800mhz FSB.

At least you have sorted the issue. You should have gone for a 800mhz.

 

newsposter: No I haven't missed the point at all. I realise the chipset is a determining factor and I definiely appreciate you guys showing me that this is probably in the top three factors (including socket type and FSB I guess) that detemines correct functioning of a CPU in a specific mobo. However, I can't get away from the suggestions that bios appears to be a consideration in CPU compatibility as discussed in the forum threads (see links I provided in previous posts before as one example), and the bios in this laptop has no CPU options, bar one, which relates to c6 states - by default this is enabled.

That aside, my CPU choice is determined greatly by finances and time as this laptop is my son's birthday present and it's way past due now.

Unless I'm reading this wrong Intel states the GL40 is compatible with only Intel Celeron CPUs and therefore the T1700 suggested by the manual is the best I can expect! I know this is not the case from the experience of others.

The T3400 I bought was about to end on eBay so I took the chance on something I feel is a worthwhile improvement over the T1600 but still a safe bet. As far as a 800Mhz processor goes my laptop manual says the T5900 cd2 is the 'best' I can expect to work with the mobo (but not necessarily the chipset).

pengy_66, yes I believe this will 'sort the issue' but if you are prepared to pay the extra $50 to $80+ into my Paypal account I'd be more than happy to grab a 800Hhz CPU. I would love to try a T9300 (which isn't even in the mobo's compatibility list) and prove you guys right. As it is, the 4Gb of RAM in the laptop now runs at 667Mhz, so really, apart from being a 2 core Pentium and not a Core 2 Duo with a bit more cache RAM is there any discernible benefits that could be gained from a 800Mhz CPU in this laptop and in relation to the extra money I would have to spend?. For me, this is a NO.

 

t8100= $32...
Intel Core 2 Duo 2.1GHz 3MB T8100 Laptop CPU SLAYP | eBay

it is NOT just about FSB speeds, there are 10 other factors that go into a CPU that make it fast...


benchmarks...
PassMark - Intel Core2 Duo T8100 @ 2.10GHz - Price performance comparison

PassMark - Intel Pentium Dual T3400 @ 2.16GHz - Price performance comparison


200pt difference... in addition to running cooler and using less power... 45nm vs 65nm...

 

that listing is all to . It says on tech specs from ebay 667mhz 1.83 ghz??

 

@whitrzac Exactly ... it's a mine field I don't have time to navigate so I have taken the safe route

 

Try installing SiSoft Sandra, it will tell you the max FSB your board will run.

 

Update: Pengy 666... yep the board will run at 800Mhz max according to Sandra.
However, the T3400 works nicely and a lot cooler than the T1600 in this laptop with Windows 7 Ultimate (64bit) and running some older games like LOTR Battle for Middle Earth 2 and Spore on mid to high graphics settings.
I feel the mobo in this laptop is always going to be hamstrung foremost by the integrated graphics. If I already had 2Gb of PC6400 RAM installed (and not PC5300) an extra 2Gb of PC6400 and a 800Mhz CPU would have been a more highly considered option. I know a few CPUs have been mentioned in this thread but the T7700 seems to be a well spec'd CPU for the money at the moment on eBay ($70 or less w/p) and that would have been my first choice.

@newposter:
You may have missed the point...
It's not your bios, it is the chipset on the particular revision of motherboard your machine has.

After some further investigation I am willing to concede that perhaps the bios plays less of a part in CPU compatibility than I first thought - so thanks for the comment.
Bottom line; between the ram and CPU I swapped out I'm happy with the performance increase for the less than $50 that I spent.
As it stands I think this has been a worthwhile upgrade for the money.... especially when one accounts for the overall drop in laptop prices since 2008!

 

Let us make this as simple as possible. Send me the T9600 and I'll send you the T9300?

 

Sounds like a fair deal.

--

 

Ooh. That is tempting! However, I would have to pry the damn laptop off the lad to put another CPU in now. I already had grief from him and the missus for how long upgrades took the first time. Sorry - I will have to pass on a swap.