Tiny/Time have no responsibility in repairing your laptop, they have gone into receivership.
Get your laptop back without delay, do not wait any longer, before it disappears into the thin blue yonder.Unless the receivers have given you written confirmation that the laptop will be repaired, and the laptop will be returned to you.Once in your possession,inform your credit card company that you are applying your legal rights under 'Equal liability of Section 75 of the Consumer Credit Act 1974 [as amended]. This puts the onus on them to sort out the situation. Do not except 'it is nothing to do with us'reply, it is the credit card companies responsibility to get you laptop repaired or replaced, if you paid for a warranty via credit card payment.Be vary wary of a clause in any documents stating 'Free Warranty', this can lead to other problems
If you have complied with the legal requirements, the credit card company may offer the services of an approved repairer under contract to them. Alternatively they may suggest that you obtain and submit a quotation from a local reputable computer repair company. This route may result in you having to make payment for the repair, and get later reimbursement and a possible wait of 4/8 weeks for payment from the credit card company. Make sure if you have to go this route, that you have a warranty from the repair company to cover their services. The credit card company may not except responsibility for these repairs, and only except responsibility for future 'new and undetected failures'.